KERNEL-9408 fix:按钮自定义图标的最终实现方式

demo/js/base/button/demo.button.js

@@ -376,12 +376,6 @@ Demo.Button = BI.inherit(BI.Widget, {
                     this.loaded();
                 }, 5 * 1000);
             },
-        }, {
-            type: "bi.button",
-            text: "图标的实现交给其他框架",
-            icon(element) {
-                element.append("<span>🧙</span>");
-            },
         }];
 
         return {

src/base/single/button/buttons/button.js

@@ -91,16 +91,8 @@
             }
 
             var iconInvisible = !o.loading && !o.iconCls;
-            if (BI.isPlainObject(o.icon)) {
+            if (BI.isPlainObject(o.icon) && !o.loading) {
                 this.icon = BI.createWidget(o.icon);
-                o.loading ? (this.icon.loading && this.icon.loading())
-                    : (this.icon.loaded && this.icon.loaded());
-            } else {
-                if (!o.loading && BI.isFunction(o.icon)) {
-                    this.icon = BI.createWidget({
-                        type: "bi.layout",
-                    });
-                    o.icon(this.icon.element);
             } else {
                 this.icon = BI.createWidget({
                     type: "bi.icon_label",
@@ -114,7 +106,6 @@
                     invisible: iconInvisible,
                 });
             }
-            }
 
             // 用于 whiteSpace
             var textWidth = iconInvisible && o.width ? o.width - o.hgap * 2 : null;